Audio unit button illumination does not work
NOTE:
- Check the vehicle 12 volt battery condition first .
- Check for B-CAN DTCs and resolve them before troubleshooting.
- Check the connectors for poor connections or loose terminals.
- Relay control module DTCs check
-1. Clear the DTCs with the HDS.
-2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.
-3. Wait for at least 10 seconds.
-4. Check for DTCs with the HDS.
DTC Description DTC DTC (Relay Control Module)
Are any DTCs indicated?
YES
Go to the indicated DTC's troubleshooting .
NO
Go to step 2.
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Turn the combination light switch to the PARKING (
) position.
-3. Check the illumination of the audio unit buttons.
Are the buttons illuminated?
YES
Intermittent failure, the audio unit is OK at this time.
NO
The failure is duplicated, go to step 3.
- Determine possible failure area (interior lights circuit, others)
-1. Check the illumination of several other buttons not related to the audio system.
Are the buttons illuminated?
YES
Go to step 4.
NO
Troubleshoot the interior lights.
- Determine possible failure area (audio unit, others)
Does the METER_ILL STATUS signal change from [0] to [1] when the combination light switch is turned to the parking light position?
YES
NO
Go to step 5.
- Open wire check (B-CAN_H line, B-CAN_L line)
-1. Turn the combination light switch off.
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Disconnect the following connectors.
Gauge control module connector A (32P) Audio unit connector A (24P) -4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Gauge control module connector A (32P): disconnected Audio unit connector A (24P): disconnected Test point 1 Gauge control module connector A (32P) No. 30 Test point 2 Audio unit connector A (24P) No. 14 Test point 1 Gauge control module connector A (32P) No. 31 Test point 2 Audio unit connector A (24P) No. 24 Is there continuity?
YES
NO
Repair an open in the wire(s).